tessl install tessl/npm-io-ts@2.2.0TypeScript runtime type system for IO decoding/encoding
Agent Success
Agent success rate when using this tile
72%
Improvement
Agent success rate improvement when using this tile compared to baseline
1.14x
Baseline
Agent success rate without this tile
63%
Generated
Agent Claude Code
Scenario 1
Nested structure composition
Scenario 2
Custom schema interpreters
Scenario 3
Applicative decoder composition
Scenario 4
Mutually recursive types
Scenario 5
KeyOf types from object keys
Scenario 6
Kleisli category for monadic composition
Scenario 7
Decoder refinement with custom error messages
Scenario 8
Round-trip property guarantees (decode ∘ encode = identity)
Scenario 9
Union types for 'one of' semantics
Scenario 10
Runtime decoding and validation with decode()